Questions tagged [gpu]
Questions related to the massively parallel computing units targeting effective computer graphics in modern machines.
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CUDA cuMemcpuHtoD vs cuMemcpy2D
Asking it here and not on SO as it seems to be appropriate question for CG.
I am learning NVIDIA NVENC API.The SDK supplies a sampled called "NvEncoderCudaInterop" .There is a chunk of code which ...
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What techniques are used to build ray intersection acceleration structures on the GPU?
What improvements and alternatives have been developed since HLBVH was introduced in the 2010 paper HLBVH: Hierarcihcal LBVH Construction for Real-Time Ray Tracing of Dynamic Geometry by J. Pantaleoni ...
user2500
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Is Nvidia's delta color compression supported in CUDA, or with DirectX UAVs?
Nvidia discusses their lossless delta color compression is on its fourth generation in Pascal, and that it transparently saves bandwidth behind the scenes for rendering workloads. AMD has a similar ...
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What is a good algorithm, and framework, to calculate centres of gravity or mass (cog)?
I'd like to take an photograph, subdivide it into a tesselation, either of squares, or (ideally), hexagons, and then find the centre of gravity (or, if you prefer, centre of mass) of each cell of the ...
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Visualizing auras around clusters of points
For a real-time application I am trying to add glow to a few hundred points. These points are more like 2D circles of various small sizes on the screen.
These points are supposed to be like balls of ...
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Should I use common resource bindings across all my shaders in HLSL/D3D12?
Will unaccessed bindings consume cache or bandwidth? I want to improve cache usage by splitting the per-path information in my renderer across different resources, but I also want to keep my binding ...
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Using GPU instead of CPU in Scala
I wrote a program that displays points expressed in 3D in a 2D canvas, using perspective projection. The aim is to display a cube. Each face of the cube is drawn by linearly interpolating the points ...
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What motherboard spec should i look for using 4 displays
I am not sure if i am on the right forum. Let me know where to go if i'm wrong.
I have an ASUS mATX motherboard H110M2 and PNY Quardro P620. Initially I put it into a mini tower which only had a 450W ...
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GL_OUT_OF_MEMORY Error when glDispatchCompute takes longer
I built a simple Ray Tracer which takes use of OpenGL's Compute Shader and traces ".obj" Files.
The results are passed to the Host-Program via glMapBufferRange after finishing computing.
...
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Evenly distributed point cloud for a grass renderer on a sphere
I'm trying to add some details like grass, rocks, trees, etc. to my little procedurally-generated planet. The meshes for the terrain are created from a spherified cube which is split in chunks (...
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How do modern GPUs handle branching instructions in shader code?
It has often been recommended to avoid branching conditions in shaders.
Why? What happens exactly in modern GPUs in that case?
Is it still recommended to avoid branching?
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Efficient operations on polyhedra
I currently perform several operations on polyhedra with cgal. These operations include
Union of two or more polyhedra
Difference of two or more polyhedra
Intersection of two or more polyhedra
...
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YUV (NV12) Chroma subsampling while converting from RGB image
I convert RGB input to YUV 420 semi-planar output using compute shader.Luma plane is straightforward as it maps 1:1 with RGB dimensions. As we know, NV12 packs Cb and Cr into one plane, which means ...
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AMD GPU specific triangles disappearing by subsequent draw calls in same frame
we have a Windows/DirectX11 2D Renderer that paints textured triangles to the screen from back to front. There is no face-culling or depth test activated.
Now on AMD GPUs it happens randomly that an ...
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"Smoothing out" raymarched reflections
I am writing a program to display 3-dimensional lattices (honeycombs) using raymarching and reflections. I made a simple cubic honeycomb to start. The usual method is to use a repetition operator, by ...
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How many rays can one RT core calculate simultaneously?
I have noticed that all GeForce RTX cards, without exception, have an equal number of RT cores as they have streaming multiprocessors (SM). From this fact I assume that each RT core is associated with ...
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Why use buffer streaming instead of collecting data on CPU and uploading to GPU all at once
Say I have a couple of meshes that I want to reupload to GPU for each frame. I can do this by generating a single array from all the meshes on CPU and then uploading to GPU (ex with ...
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How to compute a GPU's theoretical GFLOPs based on its specs?
I was looking at the specs of this GPU in particular, and tried to compute its theoretical GFLOPs based on more basic specs, such as clock frequency and number of CUDA cores.
My first thought was: ...
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Inter-Process communication in compute shaders
How do I write a code to facilitate common shared memory for communication between multiple shaders as well as processes within them in python?
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GPU accelerated 2D graphics library with signed distance functions
I want to create my own 2D graphics library using signed distance functions where everything is drawn on the GPU. Browsing the web I quickly found Inigo Quilez website that describes how to draw basic ...
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Queue from a family queue that supports presentation doesn't work [Vulkan]
I'm following this tutorial on Vulkan and I tried to see if it actually worked with different queues for drawing and presenting the image of the triangle. My GPU supports presentation with every queue ...
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After making any 3D model using Opengl how to export it's data in .dae file?
I'm trying to make simple 3d modeling program in c++ with Opengl. So I don't know how to transfer/convert/export or save data of 3D model in .dae file.
NOTE:- 3d model is made using Opengl ...
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Software Rendering Display Latency
I've been doing some reading as to how to reduce input delay on modern computing devices. A lot of my understanding from this comes from the VR research paper by Carmack explaining the numerous ...
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Image cleaning - removing all regular shapes ( circles, squares, text, icons etc. )
I'd like an automatic method to clean images. I've been looking at the GIMP, and its command line (cli) interface, in scheme / lisp. It looks very promising, but I'm a complete novice, so I'd be ...
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